Lochinvar 1.3 BMS Voltage at min power BMS V @min mod, BMS Voltage at max power BMS V @max mod

PC Program Instructions

6Parameters (continued)

BMS Voltage at min power (BMS V @min mod)

If parameter 4CB is set to 0, the control must know what voltage corresponds to the minimum power. This can be changed by accessing parameter 4GI. The range for this parameter is 0Vdc to 4GJ The default value is 2Vdc.

BMS Voltage at max power (BMS V @max mod)

If parameter 4CB is set to 0, the control must know what voltage corresponds to the maximum power. This can be changed by accessing parameter 4GJ. The range for this parameter is 4GI to 10Vdc. The default value is 10Vdc.

BMS Demand Enable (1) Voltage (0)

If parameter 4CG is set to YES (BMS control of cascade), the heat demand can be activated either by the voltage on the 0-10Vdc input, or by closing the enable contacts. To choose the voltage input, set parameter 4GK to 0. To choose the enable input, set parameter 4GK to 1. The default value is 0.

Storing parameters on your PC

Once you have customized the parameters for a particular heater, you can store the new settings on your PC. This will allow you to restore these settings should you have to replace the SMART TOUCH control, or allow you to load these settings into another heater at a later date.

The settings are stored as a data file. To save a file, click on Parameters at the top of the screen, then on Save data file to disk on the bottom of the pull-down menu (see FIG. 6-1 on page 10). A new window will appear (FIG. 6-13). On the top left side it shows the drive on which it will save the file. Below that is the directory it will use. These may be changed to any drive and folder you wish (for instance, a USB flash drive). At the right side is a list of the default data files. At the bottom is a field for entering the file name you wish to use. Note that the extension for this file is .pil. Make sure that you DO NOT overwrite the extension when entering the file name. You

MUST NOT use any of the default file names shown in the field on the right side of the window. This could overwrite that default file! If you are updating a file, and want to overwrite the old one, you may scroll down to that file name and click on it, instead of having to type it into the field at the bottom of the window. Click on the OK button to save the file. A message will appear confirming that the file was saved. Note that the new file name appears in the lower right-hand corner of the SMART TOUCH PC program window.

Figure 6-13Save Parameter File Window

Loading stored parameters from the PC

To retrieve a set of parameters that had been stored previously, click on Parameters at the top of the screen, then on Get data file from disk (see FIG. 6-1 on page 10). A new window will appear (FIG. 6-14). On the left top corner, select the drive on which the data file is stored, followed by the correct folder. The list of data files in that folder will be shown on the right. Click on the data file you wish to obtain. That file name will appear in the field at the bottom of the window. Click on the OK button. Note that this file name appears in the lower right-hand corner of the SMART TOUCH PC window.

Figure 6-14Get Parameter File Window

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